Twin motor.



No. 65l,20|. Patented lune 5, |900.

` W. VON ECHELHAEUSER.

TWIN MOTOR.

(Application led June 27, 1899.) (N0 MOdl.) 3 Sheets-Sheet 2.

H15 HITORN EY.

Patented June 5,Y |900.

w. voN macHELHAEusER.-

TWIN MOTOR.

(Application led June 27, 1899.)

3 Sheets-Sheet 3,

(No Model.)

INVENTOR WILHELM voN OEGHELHHEUSER BY JVQMISf/l/x f" HIS H'ITORNEYS.

WITNESSES: Q//zda/ NiTnD STATES Finca.

TVWIN MOTO R.

SPECIFICATION forming part of Letters :Patent No. 651,201, dated June 5, 1900.

Application filed Juno 27,1899. Serial No. 722,069. (No model.)l

T0 @ZZ whom t may concern:

Be it known that I, WILHELM voNOEcHnL- HAEUSER, a subject of the German Emperor, residing' at Dessau, in the German Empire, have invented certain new and useful Improvements in Twin Motors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has reference more particularly to that class of engines or motors in which two pistons work reciprocally toward and from each other in the same cylinder; and the object of my invention is to/construct a duplex motor or engine of this character in a simple form and with few parts and in such a Way that it will be balanced.

In the accompanying drawings, Figure 1 is a side elevation of an engine constructed in accordance with my invention. Fig. 2 is a plan view. Figs. 3 and 4 are corresponding views of a modification. Figs. 5 and 6 are corresponding views of another modification.

In the several figures the engine or motor is shown as arranged horizontally on a bedplate B B B2; but of course it may be arranged in any other suitable position. two cylinders e e are arranged on this bedplate, and two pistons a and o (indicated by dotted lines) move reciprocally toward and from each other in each cylinder.

In the construction shown in Figs. 1 and 2 the piston-rods of the two outer pistons a are connected to a cross-head r, which in turn has a rod h extending between the two cylinders and connected to a slide le, moving in horizontal guideways 'i on the bed-plate B. The slide k is connected through its cross-pin 7s and connecting-rod Z with a centralcrank m on the crank-shaft A. The connecting-rod n of one of the inner pistons o is connected to the crank p of the shaft, which is adjacent to the pistons o, while the rod n of the other piston is connected to a crank q on the end of the said shaft.

In the modification shown in Figs. 3 and 4 the construction is substantially the same, except that in place of the reciprocating crosshead?1 I provide an oscillating shaft d, which is mounted in bearings f in the bed-plate B and has arms c connected by rods b to the The two outer pistons CL. An arm g ou this oscillating `shaft d is connected by a rod h to the slide 7c, as before.

If the constructions described be used for gasengines, (an exam ple of such a gas-en gine with one cylinder is shown in Letters Patent No. 508,833,) the two constructions so already described will work with one explosion to each revolution of the crank-shaft.

In the modification illustrated in Figs. 5 and 6 the connections are such as to permit of an explosion to each half-revolution of the crankshaft. Thus at the moment of the explosion in one cylinder c the two pistons a and o of that cylinder stand near to each other after they have suitably compressed the charge on their inward movement, while on the other hand the two pistons in the other cylinder have been driven outward and away from each other bythe preceding explosion and are ready to compress the new charge on their next inward movement. In this modification the connecting-rods n of the two pistons o, adjacent to the crank-shaft A', are connected to cranks p set at substantially one hundred and eighty degrees from each other. The two outer pistons a are connected by the rods h2 to two opposite arms c on the oscillating shaft d. An arm g on this shaft dl is connected by a rod Z to a crank m on the main crankshaft A. In this construction the two cylinders c are placed nearer together than in the examples before described, since the connection between the shaft d and the crank-shaft A is at the side of the bed-plate B2 instead of between the two cylinders.

In each of the constructions described it will be seen that but three cranks on the main shaft A A' sulice for all four pistons of the two cylinders of the motor or engine.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A duplex engine or motor having two cylinders and two pistons working in opposite directions in each cylinder in combination with a single crank-shaft having three cranks to which the rods of all four pistons are connected up.

2. A duplex engine or motor having two cylinders and two pistons working in opposite directions in each cylinder in combina- IOO tion with a single crank-shaft having three cranks, two of which are connected up to the adjacent pistons and means connecting the other two pistons to the third crank.

3. A duplex motor or engine having two cylinders and two pistons working in opposite directions in each cylinder in combination with a crank-shaft having three cranks to two of which the adjacent pistons are cony nected, a slide having a connecting-rod conlnected to the third crank and means connecting the outer pistons to the said slide, suh-V stantially as described.

4. A duplex engine or motor having two cylinders and two pistons working in oppo- WLHELM VON OECIIELIIAEUSEL lVitnesses: A

HENRY HASPER, p WOLDEMAR HAUPT. 

